X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/a5ec8efeae4f20b4d5e4d38516b283e9e725744e..97470ff139fad2f054a82fb40c13a62d0ac0f15d:/perl.inc.pl
diff --git a/perl.inc.pl b/perl.inc.pl
index 63e3e7b..caaf912 100644
--- a/perl.inc.pl
+++ b/perl.inc.pl
@@ -80,9 +80,11 @@ use utf8;
['given
', 'switch statement to smart-match with when
/default
', {feature => 'switch', experimental => 'smartmatch'}],
['/(?<name>)/
', 'named capture buffers into %+
'],
['/(?1)/
', 'recursive regular expression patterns'],
+ ['/(?|)/
', 'resets capture numbering for each contained branch'],
['/.++/
', 'possessive quantifiers ?+
, *+
, ++
to match greedily'],
['s/keep\K//
', 'floating positive lookbehind, efficient alternative for s/(keep)/$1/
'],
- ['/\v/, /\h/
', 'vertical and horizontal whitespace escapes'],
+ ['/p
', 'optionally preserve ${^MATCH}
variables (avoiding $&
penalty until COW in v5.20)'],
+ ['/\v/, /\h/
', 'vertical and horizontal whitespace escapes (\V
\H
to invert); also /\R/
for newlines'],
['my $_
', 'lexically scoped version of the default variable', {experimental => 'lexical_topic', dropped => v5.23.4}],
['state
', 'persistent my
variables', {feature => 'state'}],
],
@@ -120,11 +122,13 @@ use utf8;
v5.14 => {
new => [
['s///r
', 'non-destructive substitution'],
- ['/(?^)/
', 'construct to reset to default modifiers'],
['/(?{ m() })/
', 'regular expressions can be nested in /(?{})/
and /(??{})/
', {experimental => 0, stable => v5.20}],
+ ['/dalu
', 'regexp modifiers to restrict character classes: either default, ascii, locale, or unicode semantics.'],
[q"use re '/flags'
", 'customise default modifiers'],
+ ['/(?^)/
', 'construct to reset to default modifiers'],
['each $ref
e.a.', 'array and hash container functions accept references', {experimental => 'postderef', dropped => v5.23.1}],
['FH->method
', 'filehandle method calls load IO::File on demand (eg. STDOUT->flush
)'],
+ ['\o{}
', 'escape sequence for octal values beyond \777'],
],
release => '2011-05-14',
distro => {
@@ -155,7 +159,7 @@ use utf8;
v5.18 => {
new => [
['${^LAST_FH}
', 'last read filehandle (used by $.
)'],
- ['/(?[ a + b ])/
', 'regex set operations (character substraction -
, unions &
)', {experimental => 'regex_sets'}],
+ ['/(?[ a + b ])/
', 'regex set operations (character subtraction -
, union +
, intersection &
, xor ^
)', {experimental => 'regex_sets', stable => v5.36}],
['my sub
', 'lexical subroutines (also state
, our
); buggy before v5.22', {experimental => 'lexical_subs', stable => v5.26}],
['next $expression
', 'loop controls allow runtime expressions'],
[q"no warnings 'experimental::â¦'
", 'mechanism for experimental features, as of now required for smartmatch'],
@@ -170,7 +174,7 @@ use utf8;
v5.20 => {
new => [
- ['sub ($var)
', 'subroutine signatures', {feature => 'signatures', experimental => 'signatures'}],
+ ['sub ($var)
', 'subroutine signatures', {feature => 'signatures', experimental => 'signatures', stable => v5.36}],
['%hash{â¦}
', 'hash slices return key+value pairs'],
['[]->@*
', 'postfix dereferencing (also e.g. $scalar->$*
for $$scalar
)', {feature => 'postderef, postderef_qq', experimental => 'postderef', stable => v5.23.1}],
[q"use warnings 'once'; $a
", 'variables $a and $b are exempt from used once warnings'],
@@ -195,6 +199,7 @@ use utf8;
['&.
', '& | ^ ~
consistently numeric, dotted operators for strings', {feature => 'bitwise', experimental => 'bitwise', stable => v5.28}],
[q"use re 'strict'
", 'apply stricter syntax rules to regular expression patterns', {experimental => 're_strict'}],
['0x.beep+0
', q"hexadecimal floating point notation with binary power; printf '%a'
to display"],
+ ['??
', 'single match shorthand (deprecated since v5.14) requires the operator m?PATTERN?
'],
],
unicode => '7.0',
release => '2015-06-01',
@@ -237,7 +242,7 @@ use utf8;
['/(*â¦)/
', 'alphabetic synonyms for assertions, e.g. (*atomic:â¦)
for (?>â¦)
and (*nlb:â¦)
for (?<!â¦)
', {experimental => 'alpha_assertions', stable => v5.31.6}],
['/(*script_run:)/
', 'enforces all characters to be from the same script', {experimental => 'script_run', stable => v5.31.6}],
['state @a
', 'persistent lexical array or hash variables'],
- ['perl -i -pe die
', 'safe in-place editing: files are replaced only after successful completion'],
+ ['perl -i -pe die
', 'safe in-place editing: files are replaced only after successful completion'],
['${^SAFE_LOCALES}
', 'locales are thread-safe on supported systems, indicated by this variable'],
],
unicode => '10.0',
@@ -248,7 +253,7 @@ use utf8;
v5.30 => {
new => [
- ['/(?<=var+)
', 'variable length lookbehind assertions', {experimental => 'vlb'}],
+ ['/(?<=var+)
', 'variable length lookbehind assertions', {experimental => 'vlb', stable => v5.36}],
['m(\p{nv=/.*/})
', 'match unicode properties by regular expressions', {experimental => 'uniprop_wildcards'}],
['my $state if 0
', 'workaround for state
(deprecated since v5.10!) is now prohibited'],
[q"qr'\N'
", 'Delimiters must be graphemes; unescaped { illegal; \N in single quotes'],
@@ -259,11 +264,43 @@ use utf8;
v5.32 => {
new => [
- ['isa
', 'infix operator to check class instance'],
+ ['isa
', 'infix operator to check class instance', {feature => 'isa', experimental => 'isa', stable => v5.36}],
+ ['$min < $_ <= $max
', 'chained comparison repeats inner part as $min < $_ and $_ <= $max
'],
+ ['/\p{Name=$var}/
', 'match Unicode Name property like \N{} but with interpolation and subpatterns'],
[q"open F, '+>>', undef
", 'respect append mode on temporary files with mixed access'],
- ['streamzip', 'program distributed with core IO::Compress::Base'],
+ ["no feature 'indirect'
", 'disable indirect object notation such as new Class
instead of Class->new
'],
+ ['streamzip', 'program distributed with core IO::Compress::Base to compress stdin into a zip container'],
],
- # https://www.effectiveperlprogramming.com/2020/01/perl-v5-32-new-features/
unicode => '13.0',
+ release => '2020-06-20',
+ details => 'https://www.effectiveperlprogramming.com/2020/01/perl-v5-32-new-features/',
+ },
+
+ v5.34 => {
+ new => [
+ ['try {} catch
', 'exception handling similar to eval blocks', {feature => 'try', experimental => 'try'}],
+ ['/{,n}/
', 'empty lower bound quantifier is accepted as shorthand for 0'],
+ ['\x{ ⦠}
', 'insignificant space within curly braces, also for \b{}
, \g{}
, \k{}
, \N{}
, \o{}
as well as /{m,n}/
quantifiers'],
+ ['0o0
', 'octal prefix 0o
alternative to 0â¦
and oct
'],
+ ['re::optimization(qr//)
', 'debug regular expression optimization information discovered at compile time'],
+ ['no feature â¦
', 'disable discouraged practices of bareword_filehandles
and multidimensional
array emulation'],
+ ],
+ release => '2021-05-20',
+ },
+ v5.36 => {
+ new => [
+ ['use v5.36
', "use warnings
; use feature qw'signatures isa
'; no feature qw'indirect multidimensional switch
'"],
+ ['use builtin
', 'namespace for interpreter functions, such as weaken
and blessed
from Scalar::Util
, ceil
/floor
from POSIX
, and trim
like String::Util
', {experimental => 'builtin'}],
+ ['is_bool(!0)
', 'distinguish scalar variable types (by builtin
functions) for data interoperability'],
+ ['for my ($k, $v) (%hash)
', 'iterate over multiple values at a time (including builtin::indexed
for arrays)', {experimental => 'for_list', feature => 'for_list'}],
+ ['defer {}
', 'queue code to be executed when going out of scope', {feature => 'defer', experimental => 'defer'}],
+ ['try {} finally {}
', 'run code at the end of a try
construct regardless of failure', {feature => 'try', experimental => 'try'}],
+ ['q«â¦Â»
', 'unicode delimiters for quoting operators', {experimental => 'extra_paired_delimiters'}],
+ ['sub ($var) {!pop}
', 'signatured subs are stable, but mixing with the arguments array @_
remains experimental', {feature => 'signatures', experimental => 'args_array_with_signatures'}],
+ ['$SIG{FPE}
', 'floating-point exceptions no longer deferred but delivered immediately like other signals'],
+ ['perl -g
', 'disable input record separator (slurp mode), alias for -0777
'],
+ ],
+ unicode => '14.0',
+ release => '2022-05-28',
},
}